troubleshooting 403 error

I just setup a website in IIS 10.0, Windows Server 2016, and I am getting a 403 error when I try to browse to the site on the server:

I've tried everything I could from setting authentication and authorization in IIS to setting the permissions on the website folder.

One thing I noticed is that if I put an index.html file in the root folder of the website, and add "hello world" to the file, it displays "hello world" when I browse to the site (again on the server). So it seems like it's not an issue with getting to the site but being able to navigate to the right file/folder within the site.